exam Maths Puzzle Numerical Ability

Hi, Can I have some help with this function?

Use f(x) = 2x - 8 and g(x) = 5x - 2 to evaluate the expression.
(a) f(g(-7))

(b) g(f(-7))

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exam Other Question

Write the equation of the line with slope and y-intercept (0, 3). Then graph the line.

This one is throwing me off with the y intercept, could I get some help please with this one. Thanks.
This is our math project and is also our final!

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